The back of the stamp sheet includes extensive text describing the dramatic roles that each featured character or vehicle plays in the Star Wars saga.

Of the 15 images on the Star Wars stamp sheet, the Postal Service is inviting the public to vote on its favorite. The stamp receiving the most votes will be honored with the issuance of a single stamp, which will be for sale later this summer.

Voting for the most popular Star Wars stamp will take place online through May 23.The winning stamp will be announced at the first-day-of-issue ceremony for the sheetlet on May 25 at the Los Angeles Convention Center.